economical power
51Germany — • History divided by time periods, beginning with before 1556 Catholic Encyclopedia. Kevin Knight. 2006. Germany Germany † …
52Argentine Constitution of 1853 — The Argentine Constitution of 1853 was the first constitution of Argentina, approved with the support of the governments of the provinces mdash;though without that of the Buenos Aires Province, who remained separated of the Argentine… …
53airplane — /air playn /, n. 1. a heavier than air aircraft kept aloft by the upward thrust exerted by the passing air on its fixed wings and driven by propellers, jet propulsion, etc. 2. any similar heavier than air aircraft, as a glider or helicopter. Also …
54harbours and sea works — Introduction harbour also spelled harbor any part of a body of water and the manmade structures surrounding it that sufficiently shelters a vessel from wind, waves, and currents, enabling safe anchorage or the discharge and loading of… …
55Constitution of Argentina of 1853 — Argentine Constitution of 1853 Cover of the original manuscript of the 1853 Constitution Ratified …
56Autonomous building — An autonomous building is a building designed to be operated independently from infrastructural support services such as the electric power grid, municipal water systems, sewage treatment systems, storm drains, communication services, and in some …
57Dam — This article is about structures for water impoundment. For other uses, see Dam (disambiguation). Hoover Dam, a concrete arch gravity dam in Black Canyon of the Colorado River. Lake Mead in the background is impounded by the dam …
581973 oil crisis — Further information: 1973 world oil market chronology 1973 Oil Crisis Other names Arab Oil Embargo The 1973 oil crisis started in October 1973, when the members of Organization of Arab Petroleum Exporting Countries or the OAPEC (consisting of the …
59List of Tesla patents — Below is a list of Tesla patents. Dr. Nikola Tesla was an inventor who obtained around 300 patents [Snezana Sarbo, [http://www.tesla symp06.org/papers/Tesla Symp06 Sarboh.pdfNikola Tesla s Patents] , Sixth International Symposium Nikola Tesla,… …
60building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
